Well I have a friend who owns a race car team up the road and they have CNC machines so they could make a billet aluminum bracket for me and it would pretty good with a piece of tube that sticks out.

Then if I want a piece of timber like in that pic I could drill 2 holes in the timber and slide it over the rods etc. My speaker will sit about 200mm off the ground as I have a recessed part in the wall frame that is 2400mm x 1420mm which a 84" UHTV will be going in at some point etc. Then I will install a drop down electric 120" screen that will go in front of the TV but of course stop short of the centre speaker.

The threaded bolts is a great idea but as I have a bare wall frame I have the opportunity to make up something that will look great and be very easy to implement. The hardest thing is deciding on the best design that will look good with or without the speaker in place.

Regardless of which way I go I will post a view pics in the gallery.

Thanks for the replies.

Theatre Room: Sony 4K VW500ES, 861v8+ID41, HD621, DSP6000's, DSP5000C, DSP5000's, Oppo 205, Sat STB, XBox One X, Stewart Cinemascope Screen, QNAP TVS 1271U-RP (96TB) with Sooloos/Roon core pkg.